Confidence: Medium · Source: FCC ULS · As of 2026-09-12
N4TSP callsign genealogy
Currently held by Phillips, Teddy S
The FCC publishes a previous_call_sign on
every amateur license — a self-link to the licensee's prior callsign.
Following those links produces the chain below.
Previous callsigns
Older callsigns held by N4TSP's current licensee, walking backwards.
- Phillips, Teddy STNgranted 2017-05-03cancelled 2017-06-27
Successor callsigns
Callsigns held now by people who previously held N4TSP.
All historical holders
Every license row we've seen with the callsign N4TSP, oldest first.
- Phillips, Teddy S TN2017-06-27 → cancelled 2020-08-12
- —— → cancelled 1999-04-08